1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright(c) 2018 ARM Corporation.
4 Cross compile DPDK for ARM64
5 ============================
6 This chapter describes how to cross compile DPDK for ARM64 from x86 build hosts.
10 Whilst it is recommended to natively build DPDK on ARM64 (just
11 like with x86), it is also possible to cross-build DPDK for ARM64. An
12 ARM64 cross compile GNU toolchain is used for this.
14 Obtain the cross tool chain
15 ---------------------------
16 The latest cross compile tool chain can be downloaded from:
17 https://developer.arm.com/open-source/gnu-toolchain/gnu-a/downloads.
19 Following is the step to get the version 8.2, latest one at the time of this writing.
21 .. code-block:: console
23 wget https://developer.arm.com/-/media/Files/downloads/gnu-a/8.2-2019.01/gcc-arm-8.2-2019.01-x86_64-aarch64-linux-gnu.tar.xz
25 Unzip and add into the PATH
26 ---------------------------
28 .. code-block:: console
30 tar -xvf gcc-arm-8.2-2019.01-x86_64-aarch64-linux-gnu.tar.xz
31 export PATH=$PATH:<cross_install_dir>/gcc-arm-8.2-2019.01-x86_64-aarch64-linux-gnu/bin
35 For the host requirements and other info, refer to the release note section: https://releases.linaro.org/components/toolchain/binaries/
37 .. _arm_cross_build_getting_the_prerequisite_library:
39 Getting the prerequisite library
40 --------------------------------
42 NUMA is required by most modern machines, not needed for non-NUMA architectures.
46 For compiling the NUMA lib, run libtool --version to ensure the libtool version >= 2.2,
47 otherwise the compilation will fail with errors.
49 .. code-block:: console
51 git clone https://github.com/numactl/numactl.git
53 git checkout v2.0.11 -b v2.0.11
56 ./configure --host=aarch64-linux-gnu CC=aarch64-linux-gnu-gcc --prefix=<numa install dir>
59 The numa header files and lib file is generated in the include and lib folder respectively under <numa install dir>.
61 .. _augment_the_cross_toolchain_with_numa_support:
63 Augment the cross toolchain with NUMA support
64 ---------------------------------------------
68 This way is optional, an alternative is to use extra CFLAGS and LDFLAGS, depicted in :ref:`configure_and_cross_compile_dpdk_build` below.
70 Copy the NUMA header files and lib to the cross compiler's directories:
72 .. code-block:: console
74 cp <numa_install_dir>/include/numa*.h <cross_install_dir>/gcc-arm-8.2-2019.01-x86_64-aarch64-linux-gnu/bin/../aarch64-linux-gnu/libc/usr/include/
75 cp <numa_install_dir>/lib/libnuma.a <cross_install_dir>/gcc-arm-8.2-2019.01-x86_64-aarch64-linux-gnu/lib/gcc/aarch64-linux-gnu/8.2/
76 cp <numa_install_dir>/lib/libnuma.so <cross_install_dir>/gcc-arm-8.2-2019.01-x86_64-aarch64-linux-gnu/lib/gcc/aarch64-linux-gnu/8.2/
78 .. _configure_and_cross_compile_dpdk_build:
80 Cross Compiling DPDK using Meson
81 --------------------------------
83 To cross-compile DPDK on a desired target machine we can use the following
86 meson cross-build --cross-file <target_machine_configuration>
89 For example if the target machine is arm64 we can use the following
92 meson arm64-build --cross-file config/arm/arm64_armv8_linux_gcc
95 Configure and Cross Compile DPDK using Make
96 -------------------------------------------
97 To configure a build, choose one of the target configurations, like arm64-dpaa-linux-gcc and arm64-thunderx-linux-gcc.
99 .. code-block:: console
101 make config T=arm64-armv8a-linux-gcc
103 To cross-compile, without compiling the kernel modules, use the following command:
105 .. code-block:: console
107 make -j CROSS=aarch64-linux-gnu- CONFIG_RTE_KNI_KMOD=n CONFIG_RTE_EAL_IGB_UIO=n
109 To cross-compile, including the kernel modules, the kernel source tree needs to be specified by setting
112 .. code-block:: console
114 make -j CROSS=aarch64-linux-gnu- RTE_KERNELDIR=<kernel_src_rootdir> CROSS_COMPILE=aarch64-linux-gnu-
116 To compile for non-NUMA targets, without compiling the kernel modules, use the following command:
118 .. code-block:: console
120 make -j CROSS=aarch64-linux-gnu- CONFIG_RTE_KNI_KMOD=n CONFIG_RTE_EAL_IGB_UIO=n CONFIG_RTE_LIBRTE_VHOST_NUMA=n CONFIG_RTE_EAL_NUMA_AWARE_HUGEPAGES=n
124 1. EXTRA_CFLAGS and EXTRA_LDFLAGS should be added to include the NUMA headers and link the library respectively,
125 if the above step :ref:`augment_the_cross_toolchain_with_numa_support` was skipped therefore the toolchain was not
126 augmented with NUMA support.
128 2. "-isystem <numa_install_dir>/include" should be add to EXTRA_CFLAGS, otherwise the numa.h file will get a lot of compiling
129 errors of Werror=cast-qual, Werror=strict-prototypes and Werror=old-style-definition.
131 An example is given below:
133 .. code-block:: console
135 make -j CROSS=aarch64-linux-gnu- CONFIG_RTE_KNI_KMOD=n CONFIG_RTE_EAL_IGB_UIO=n EXTRA_CFLAGS="-isystem <numa_install_dir>/include" EXTRA_LDFLAGS="-L<numa_install_dir>/lib -lnuma"